Concrete pipe joint



Sept. 18, 1934. B. J. UKRQPlNA 1,973,967

CONCRETE PIPE JOINT Filed Nov. 20, 1935 5 Sheets-Sheet l l-Tgi 10 ETgC-l l l2 /6/52'2033 30 I9 34,823 INVENTOR. A 3 BJ. l//f/PoP//w Sept 18, 1934- B. J. UKROPINA 1,973,967y

CONCRETE PIPE JOINT Filed Nov. 20, 1955 5 Sheets-Sheet. 2

P igE-n wma '9 f@ 23 INVENTOR. J, l//f/POP//W ATTORNEY.

Sept 18, 1934n B. J. UKROPINA 1,973,967

CONCRETE PIPE JOINT.

Filed Nov. 20, 1933 5 Sheets-Sheet 3 E i g'. E: .l 8f 9? g 10,92 a.' @a 3586 Y l o A INVENTOR.

ATTORNEY.

Patented Sept. 18, 1934Y UNITED 4" Claims;

This inventionrelates to improvements in" con crete pipes and! j ointsl therefor;

The generali object ofi the invention is' to pro-y v-idean improved concretey pipe construction.

.5 Another object of the inventiomistoprovide' an; improved' jointconstruotiom for joining' two lengths of.` pipe.

A more' specific object? offmy invention' isto provide an concrete joint". wherein the spigotendf' 10 includes la' bevelled centering member.'

Other objects and the advantages'- of this in"y Vention willloe apparenti-from thefollowing def scription taken in connection-` with the`v acoomf panyingA drawings whereinz A Fi'g. 1'5 isa-sideelevation of'aleng-thfof 'concrete pipe embodyingtlie features offmy invention;

Fig. 3'1 is -an enlarged fragmentary longit'udinal'v section ofmyiinprovedooncrete pipe;

Fig. 4i`s alviewsimilar toFiga 3-showing two lengths of f myimproved pipe joinedtogethery withl my improved pipe jointi' Fig; 5 isarview similar toeFigi Ll/sli'o'wing a 25' modied form ofjoir'it construction;

Fig.v 6"is1- a1: fragrnenteryz longitudinal section through et modified form-of i pi-pe';

Fig.. 7' isle.4 View similir to Fig. 6 showings#- slightlymodified form of joint;

Figa 8# is'f a; fragmenteryJ longitudinal" section through'. a further modified?v formof pipeA showingV onev step intliefforrning lvofiafj oint- Fig: 10-isa view'fsiinilar toFig; 9lshowing'tlieI completed'joint; and

Fig. 11 isa fragmentary longitudinal section4 through a still further modified form of pipe;`

Referringf to tl'ie di'awingsb'y reference characters I' lia/ve indicatedv myimprovedconcrete pipe. generally-at'10.I As shown the pipe `10 vcomprises la. metal Vreinforcing cylinder l'2-ernbedded between an'inner lyer of concrete 13" andan' outer'lafyer'of 'conc-retelil. Aft one end'fthe-cylins- 455 der l2`includes a-spigotfring- 15' which` ismade of thicker metal-than 1the -cylinder and isf shown as -butt welded thereto".` Spa-ced 'from f the outer end oftlfie'spigoty ring- 15I`fprovicle-` ontle Iouter face-thereof Av"a-'bandof metal 16' whiclris #Welded 50 to the spigot ring and is inclined outward towardsthe: adjcent end ofl the'- pipe tl'lus 'forming anangu-l-ar recess l1'1 eround the spigot ring.

At the' end ofthe1cylinderf12opposite the spigot ring- 15' I provide'-a-bellfring 18 whiclrlike theY l' spigotringis'emadef of tliickerj metal'than-k the'- cylinderf andis butt weldecthereto.v Adjacent its' in-ner' end the bell ringlincluds-ian"outwardly fl-'ared shoulder 19"Which mergesfiritoan eniargedfl portion" flthe inner 2 dimeter ol'wliicl'i fis-greater 560i than the outer diameter ofitiie spigot rifle-:155l

The' outer end ofi the portion 20 fof the bellringfis' preferably beveledg as at 2:1 at einL angle corre spending to'- the" angle off the` band` 16 onth`e` spigot-ring.

'Iflieendfoff the inner'- layer of concrete 13 edjai-y 654 cent-the" spigot-ring l5 is shown as'ter'ininetingl flush with the outer layer of the spigot ringasat 22fwl'iilel tleen'cl ofi the inner layer off concrete adiacenti the@ belli ring` 181 is set: back from the outerv endA of the bellrin'gf a'nd terminates in e,`V 70V beveled-fce'23', the outerendof Whichl engages thelbell ring adjaoentitlie'ihner end ofi thelloellfy r-ingshoulder 19.-

Surrounding; they cylinder 12V and' the b`el1 rin'gf 185'If preferablyprovide etV plurality offreinforcingf 351 bars'fZG'iwhioh'are spotweldedthereto and similar" barrsferefspotwelded' to theinner fece ofj the: spigot ring 15. I may also provide awire rein'- for'oing-cage 28'whicli-is spotwelded toitlie inner fioe ofthe' cylinder 12'and1the fbars 2'7. Embed# 3gl dedin'ltlie outer'layer of l concrete' 14 intermediate the outer-l surfetce thereof and the@ cylinder" 1211i provides-metalreinforcingfcalge 29;'

WlienVA twolngths' lof the pipel 1D 1ere 'joined the spigot ring 15 of one pipe is'lpositioned in-the ldell 95' ring-`18of fthei-otherfpi-pe andthe pipes are-moved together untilV tlie'endI of thevvbell'ring isposif-l tonedintli'e recess 171 and the taperediend12'1?l ofi thefb'ellring* engages rthe band f 16 f on `the'` spigot ring as shown'in'Fig.' 4Z

y It will thus be seen that a, portion of the bell end ientersf thespigotend ofi an'ladjoining length. Wl'ierr-th'e pipes are thus joined atubularcharnlera30 is formedbetween the spigot/ring llain'd the' bell ringl 18.'A This-tubular ohamberhas -oy- 100 lindi'cal inner and Eouter` walls without pro-tuberonceseor'1 heads thereon.A A'A chamber 3'-1`" is also frmedbetween the vend E22"of lvthe inner layer of? concrete of "one pipe' andfthe end 23 'vof'the inner leyerf'oi concrete' of i'tliefothe'r pipe. Furtherrn'oreiy m5 af' chamber" 3-2 is-A 'formed between the' end 1 24@ of? the! outerflaiyer` of concrete of one pipeandthe end'AZBiof theiotnerfpipef.

Affter'th'e pipes arejthus joinedaicafulling me# teriai 33`,- such es'leed; is'clriven` in the chamberf'SU u() betweenthe'smooth lvire-1l 4of the hand 16; 'and the' smooth outer: end v'of the spigot ring. Thereaftere; fill material 34,E such esicement'mortar, ispositioned 1in ythe. Ichamber l31 and 'asimilar ill Imalte-' rial l=isf positioned in the chamber 32.

In Fig. 5-I'lfiave` shown afslightly modified forni4H offjoint construction for use incon-nectingf twol len'gths fof the'pipey 10'." When" forming 'thisfjoint two lengths of pipe are 1leficlien'dfto endeus-preti-tri olrsl-dscribednd then-aropeor-cable 365which eti iis

may be made of a plurality of flexible steel wires or lead is driven in the chamber 30 up to the band 16. 'Ihen the caulking material 33 is driven in the chamber between the rope 36 and the outer end of the spigot ring and thereafter the fill materials 34 and 35 are positioned in their respective chambers as previously described.

In Fig. 6 I have indicated a modified formof concrete pipe generally at 381. As shown the pipe 38 like the pipe 10 comprises a metal reinforcing cylinder 39 embedded between an inner layer of concrete 40 and an outer layer of concrete 41. At one end the cylinder 39 includes a spigot ring 42 which is made of thicker metal than the cylinder and is butt welded thereto and at the opposite end of the cylinder I provide a bell ring 43 which is likewise made of thicker metal than' the cylinder and is butt welded thereto. As shown the bell ring includes a tapered shoulder 44 and an enlarged end section 45 the inner diameter of which is greater than the outer diameter of the spigot ring 42.

Positioned inward from the outer end of the spigot ring I provide on the outer surface thereof an annular' metal band 46 which is preferably spot welded to the spigot ring. The outer diameter of the band 46 is approximately the same as the inner diameter of the section 450i thebell ring. Surrounding the spigot ring 42 a metal bell ring 47 which includes a section 48 is coaxial with thev spigot ring and a disk-like section 49 which is spot welded to the spigot ring adjacent the inward face of the band 46. The outer end of the section 48 is set back from the outer end. of the spigot ring 42 and is preferably outwardly flared, as at 50. The inner diameter of the section 48 is greater than the outer diameter of the section 45 of the bell ring 43.

The end of the inner layer of concrete 40 adjacent the spigot ring 42 terminates ush with the outer end of the spigot ring as at 51 while the opposite end is set back from the outer endof the bell ring and terminates in a b-evelled surface 52, the outer end of which engages the inner end of the bell shoulder 44. p K

The end of the outer layer of concrete 41 adjacent the spigot ring 42 is set back from the end thereof and terminates flush with the outer end of the ring 47, as at 53, whiler the opposite end terminates flush with the outer end of the bell ring 43 as at 54. n

When the two lengths of the pipe 38 are joined the spigot ring 42 of one pipe is positioned in the bell ring 43 of the other pipe and the two pipes are moved together until the outer end of the bell ring is positioned adjacent to but out of engagement with the band 46. In this position a portion of the section 45 of the bell ring 43 is telescoped in the ring 47. When the pipes are thus joined a chamber 55 is formed between the spigot ring 42 and the bell ring 43. Furthermore, a chamber 56 is formed between the end 51 of the inner layer of concrete of one pipe and the end 52 of the inner layer of concrete of the other pipe and a chamber 57 is formed between the end 53 of the outer layer of concrete of one pipe and the end 54 of the outer layer of concrete of the other pipe.

After the pipes are thus joined a caulking material 58, such as lead, is positioned in the chamber 55 between the band 46 and the outer end of the spigot ring 42 and thereafter a iill material 59 such as cement mortar is positioned in the chamber 56 and a similar iill material 60 is positioned in the chamber 57.

In Fig. 7 I have indicated another modified lbutt welded thereto.

form of concrete pipe generally at 61. As shown the pipe 61 is similar in most respects to the pipe 38 and comprises a metal reinforcing cylinder 62 embedded between an inner layer of concrete 63 and an outer'layer of concrete 64. At one end of the cylinder 62 I provide a spigot ring 65 which is made of thicker metal than the cylinder and is At the opposite end of the cylinder I provide a bell ring 66 which like the spigot ring is made of thicker metal than the cylinder., and is butt welded to the cylinder.

Surrounding the spigot ring 65 I provide a 'metal-'bell ring 67 which includes a section 68 which is coaxial with the spigot ring 65 and an inwardly inclined section 69 the inner end of which is spaced from the outer end of the spigot ring and is spot-welded thereto. The outer end of the section 68 of the ring 67 is set back from the outer end of the spigot ring 65 and is outwardly ared as at 70. v Y

The bell ring 66 includes an enlarged end section 71 and an inclined shoulder 72. The inner diameter of the bell section 71 is greater than the outer diameter of the spigot ring 65 while the outer diameter of the bell ring section is less than the inner diameter of the section 68 of the ring 67. The outer end of the bell ring 66 is preferably beveled as at 73.

The end of the inner layer of concrete 63 adjacent 'the spigotv ring 65 terminates flush with the outer end of the spigot ring as at 74, and the opposite end is set back from the outer end of the bell ring and terminates in a beveled `face -75, the outer end of which engages the inner end of the bell shoulder 72. ,The end of the outer layer of concrete 64 adjacent the spigot ring is set back from the outer end of the spigot ring and terminates flush with the outer end of the ring 67 as at 76l and the opposite end is set back from the out-er end of the bell ring as at 77.

When two lengths of the pipe 61 are joined the spigot ring 65 of one pipe is positioned in the bell ring 66 of the other-pipe and the two pipes moved together until the end73 vof the bell ring is spaced a short distance from the tapered section 69 ofthe ring 67 as shown. In this position a portion of the bell ring 66 is telescoped into thev section 68 of the ring 67.- When the pipes are thus joined a chamber 78 is formed between the bell and spigot rings and a chamber 79 is formed between the inner layers of concrete and a chamber 86 is formed between the outer layers of concrete.

After the pipes are thus joined a caulking inaterial, such as lead, is positioned in the chamber 78 between 'the tapered section 69 of the ring 67 and the outer end of the spigot ring 65. Thereafter, la fill material 82 such as cement mortar is positioned in the chamber 79 and a similar ll material 83 is positioned in the chamberBO.

In Figs. 8, 9 and 10 I have indicated a further modified form of concrete pipe generally at 85. As shown the pipe 85 comprises a metal reinforcing cylinder 86 embedded between an inner layer of concrete 87 and an outer layer of concrete 88. At one end of the cylinder 86 I provide a spigot ring 89 which ismade of thicker metal than the cylinder and is buttrwelded thereto and at the opposite end of the cylinder I provide a bell ring 90 which like the spigot ring is made of thicker metal than the cylinder and is butt welded thereto. The bell ring includes an inclined shoulder 91 and an enlarged end section` 92, the inside diameter of `which is greater than the outside diameter of the spigot ring89.

The end of the inner layer of concrete 87 adjacent the spigot ring 89 terminates ilush with the outer end of the spigot ring as at 93 and the opposite end is set hack from the outer end of the bell ring 90 and terminates in a beveled face 94 the outer edge of which engages th-e inner end ci the tapered shoulder 91 of the bell ring. The end of the outer layer of concrete adjacent the spigot ring is set back from the outer end of the spigot ring as at 95 and the opposite end terminates flush with the outer end of the bell ring as at 96.

When the two lengths of the pipe 85 are to be joined the spigot ring 89 of one pipe is positioned in the bell ring 90 of the other pipe and the two pipes moved together until the end 96 of the outer layer of concrete of one pipe engages the end 95 of the outer layer of concrete of the other pip-e. In this position a chamber 97 is formed between the bell and spigot rings and a chamber 98 is formed between the adjacent ends 93 and 94 of the inner layers of concrete.

When the lengths are thus joined an annular rope member 99 which is made of lead or is a steel cable is driven into the chamber 97 until it engages the face 95 as shown in Fig. 9. A caulking material 100 such as lead is then driven in the chamber 97 between the rope 99 and the outer end of the spigot ring 89 as shown in Fig. 10. Thereafter a ll material 101 such as cement mortar is positioned in the chamber 98.

In Fig. 11 I have indicated a still further modified form of concrete pipe generally at 102. As shown the pipe 102 is similar in most respects to the pipe 85 and like portions thereof are indicated by similarly primed reference characters. In the pipe 102 I may arrange a ring or band 102' which extends about each spigot ring 89 and is secured thereto as by welding. This ring 102 preferably has an outside diameter which is not greater than the inside diameter of the bell ring 92'. Also in this type I may employ a solid metal band 103 which is positioned on the spigot 89 adjacent the face 95' of the outer layer of concrete before two sections of the pipe are joined. As shown the band 103 is circular in cross section and is spot welded to the spigot ring but it may be of any cross sectional conguration desired and may be positioned on the spigot ring without securing it thereto. The outer diameter of the band 103 is slightly less than the inside diameter of the bell ring section 92 so that when two sections of the pipe are joined the band 103 will telescope within the bell ring. After the pipes are thus joined the caulking material 100 is driven into the chamber 97 between the band 103 and the outer end of the spigot ring and then the iill material 191 is positioned in the chamber 89'. It will be understood that either the ring 102 or the band 103 may be used or omitted depending on the requirements in each installation.

From the foregoing description it will be apparent that I have provided a novel concrete pipe construction and joint for connecting two lengths of the pipe which is simple in construction and highly eicient in use.

Having thus described my invention, I claim:

l. In a conduit comprising a plurality of lengths of concrete pipe laid end to end, each of said lengths including a bell section at one end and a reduced spigot section at the opposite end, said bell section having a metal lining therein and said spigot section having a metal band thereon, each of said spigot bands having a metal collar thereon with one end of said collar engaging said band and secured thereto at a point spaced inward from the outer end of said band and the opposite end of said collar being spaced from said band whereby said collar forms a recess in the spigot end face of said pipe with the outer end of said collar spaced inward from the outer end of said band, said pipes being laid with said spigot sections telescoped within said bell sections and said bell sections positioned in said re cesses formed by said collars, and caulking material positioned in the space between adjacent bell and spigot sections.

2. A length of concrete pipe including a bell section at one end and a reduced spigot section at the opposite end, said bell section having ametal lining therein and said spigot section having a metal band thereon and a metal reinforcing member connecting said bell lining and said spigot band, said spigot band having a metal collar thereon, said collar being spaced from the outer end of said band and being secured thereto, the outer face of said collar being inclined outward to form a recess in the spigot end of said pipe between said spigot band and said collar and the outer end of said collar being spaced from the outer end of said band.

3. A conduit comprising a plurality of lengths of concrete pipe laid end to end, each of said lengths including a bell section at one end and a reduced spigot section at the opposite end, each of said bell sections having a metal lining therein and each of said spigot sections having a metal band thereon, each of said spigot bands having a metal collar thereon with one end of saidcollar engaging said band and secured thereto at a point spaced inwardrom the outer end of said band and the opposite end of said collar being spaced from said band whereby said collar forms a recess in the spigot end face of said pipe and the outer end of said collar being spaced inward from the outer end of said band, said pipes being laid with said spigot sections telescoped in said bell sections and with said bell sections positioned in said recesses formed by said collars, a compressible annular metal band positioned on each of said spigot bands and spaced from the outer ends oi said spigot bands, and a caulking material positioned in the space between adjacent bell and spigot sections.

4. A conduit comprising a plurality of lengths of concrete pipe laid end to end, each of said lengths including a metal reinforcing cylinder embedded between an inner layer of concrete and an outer layer of concrete, said cylinder including a bell section at one end and a spigot section at the opposite end, said spigot sections each having a metal collar thereon spaced from the outer end of said spigot section, said collar being secured-to said spigot section, said collar including a cylindrical body havingl a tapered outer face to form a recess between the collar and the outer surface of said spigot section, said lengths being laid with the spigot of one pipe telescoped in the bell section of the adjacent pipe and with the bell sections positioned in said recesses formed by said collars and a caulking material in the space between adjacent bell and spigot sections.

BOZIDAR J. UKROPINA. 

